Press.



R. NAWRATH.

PRESS.

APPLICATION FILED 0m. 8. m5.

Patented Apr. 8, 1919.

7 SHEETSSHEET I.

INVENTOR. W

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WITNESSES: MW

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R. NAWRATH.

PRESS.

APPLICATION FILED ocn a. ma.

1,299,501 Patented Apr. 8, 1919.

7 SHEETSSHEET 3.

INVENTOH.

WITNESSES:

v R. NAWRATH.

PRESS.

.APPLlCATlON FILED OCT. 8. I915.

1,299,501 Patented Apr. 8, 1919.

7 SHEETS-SHEET 5- Fi g. 6.

WITNESSES INVENTOR iifi n05 "cums r-Errxv w. PHaymL/nlu. wAsnmuIrm. 0.cv

R..NAWRATH.

PRESS.

APPLICATION FILED ocn s, 1915.

1,299,501 Patented Apr. 8,1919.

7 SHEETSSHEET 6.

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' R. NAWRATH.

PRESS.

APPLICATION man OCT, 8. 1915.

1,299,501. Patented Ap1'.8,1919.

7 SHEETS-SHEET 7- WITNESSES: \82 INVEN r03 QM MM, frrw ROBERT NAWRATI-I,OF NEWARK, N EW JERSEY.

' PRESS.

Specification of Letters Patent.

Patented Apr. 8, 1919.

Application filed October 8, 1915. Serial N 0. 54,704.

T 0 all IO/607m it may concern Be it known that I, ROBERT NAWRATH, asubject of the Emperor of Germany, and a resident of Newark, in thecounty of Essex and State of New Jersey, have invented certain new anduseful Improvements in Presses, of which the following is aspecification.

This invention relates more particularly to presses for bending metalfor structural purposes, such as sheet metal in the construction ofdoors and windows and their frames, cabinet work and the like, embossingmetal ceilings and so forth, or bending heavier metal, such as channelirons, stair treads and the like, and for which presses there has arisena large demand due to the recent extensive use of metal for the purposesabove indicated.

The objects of the invention are to secure in a machine of given sizeand weight maximum force and efliciency in bending the metal; to securea construction giving an increased bending power from a given drivingpower, and still providing an opening suflicient to get the work out ofthe machine; to accomplish this by imparting movement to both the upperand lower dies, each toward the other, so that the sheet metal is bentby the impact of said members when they meet;to provide suitable meansfor imparting to said upper and lower dies such movement toward eachother; to provide improved means for adjusting the upper and lower diesinto exact parallel relation; to insure movement of the hammers in asingle plane without moving sidewise; to secure a strong and durablepress of my improved construction, and to obtain other advantages andresults as may be brought out in the following description.

Referring to the accompanying drawings, in which like numerals ofreference indicate the same parts throughout the several views,

F igure 1 is an elevation of a press of my improved construction viewedfrom the front or side at which the operator stands, and showing certainparts of the driving means in'central vertical sections;

Fig. 2 is a plan of the same;

Fig. 3 is a section on the horizontal plane indicated by the line A-AFig. 1;

Fig. 4 is an end elevation of the press look ing at the right hand endas shown in Fig. 1;

Figs. 5, 6 and 7 are vertical cross-sections taken upon lines B.B, 0-0and DD, respectively, of Fig. 1;

Fig. 8 is a detail plan of a portion of the adjusting means for theupper hammer par-- tially in section upon line EE, Fig. 6 and on largerscale;

Fig. 9 is a perspective View of one of the supporting collars for saidadjusting mechanism, and

Fig. 10 is a perspective view of certain means for mounting acounter-shaft used in imparting motion to the adjusting means.

In the specific embodiment'of the invention shown in said drawings 1, 2indicate housings adapted to stand upright in substantially parallelrelation at opposite ends of the machine, said housings being rigidlyconnected by tie rods 3, 3 at their lower ends and by a top leaf 4 attheir upper ends. It will be understood that the upper and lower hammerscarrying the dies between-which the metal is shaped, according to myinvention, extend horizontally betweensaid housings and are adapted tobe guided thereby in a vertical plane as they are moved up and down bysuitable operating mechanism hereinafter described.

The lower hammer, designated by reference numeral 5, is arrangedvertically edgewise between the housings 1, 2 in the middle verticalplane thereof and guided against lateral displacement by its endsfitting into shallow recesses or guideways 6, 6 inthe housings. The saidhammer is cored longitudinally, as at 7, (see Fig. 5) and through itextends a shaft 8 of smaller diameter which has bearings at its endsinthe housings 1, 2 and projects beyond one of said housings as 1 toreceive a driving gear wheel 9. At points of its length between thehousings 1, 2, and which points I have shown as two in number althoughit might be otherwise, the shaft 8 is provided with'eccentrics 1O, 10fast thereon, and each eccentric receives a block 11, Figs. 1 and 6,fitted into a transverse aperture of the hammer so as to slide ina-direction from-side to-side of the hammer Without any movement withrespect to the hammer in its plane. These slide blocks are preferablymade each in two halves as shown, adapted to be applied one from eachside of the hammer, the sections being then fastened together by anysuitable means such as the bolts 12. Preferably liners 13 are insertedone at the top of each slide block to reduce the friction.

It will thus be seen that as the shaft 8' turns it will by itseccentrics 10, 10 impart motion to the slide blocks 11, 11, the verticalcomponent of which motion is imparted to the hammer while the horizontalcomponent simply slides the blocks transversely of the hammer. Thehammer is thus given an up and down movement in the Vertical plane inwhich it is held by its ends in the guideways 6, 6.

Preferably the shaft 8 is given additional support adjacent the slideblocks 11 by pedes' tals 14 each extending upward through a suitablerecess 15 (see Fig. 5) in the lower part of the hammer and providing atits upper end a bearing beneath the shaft 8. These pedestals aresuitably seated upon the foun-. dation for the machine, which may bedepressed between the housings '1, 2, and preferably the middle part ofthe hammer has at its bottom a swell 16, which is here shown in Fig. 1as between the pedestals 14, 14, to prevent springing or yielding underthe pressure. Furthermore, the housings 1, 2

' are provided each at its bottom with a reinforcing extension 17 toproject down into the foundation and strengthen the housing against theapertures and recesses vertically along its middle as described herein.7 The lower hammer 5 is also preferably provided adjacent its ends whichfit into the guideways 6, 6 in the housings, with lateral flanges 18which lie against the inner faces of the housings 1, 2 and prevent anyendwise movement of the hammer,

The upper hammer,'designated by reference numeral 20 is also arrangedvertically edgewise between the housings 1,2 in the middle verticalplane thereof and guided against lateral displacement by its endsextending into apertures 21, 21 in the housings and which aperturesprovide guideways fitting said ends. The upper hammer also has adjacentits ends lateral flanges 22, 22 which lie against the inner faces of thehousings 1, 2 to prevent any possible longitudinal movement of thehammer.

The upper hammer 20 is connected at its upper edge, as by adjustingscrews 23, 23 to hangers 24, 24 through which extends a shaft 25 havingbearings in the housings 1,- 2 and outside of one of them as 1 receivinga gear wheel 26. I have shown the hammer 20 connected or supported attwo points of its length, one near each end, but obviously it could besupported at more or less points located wherever desired. The shaft 25is provided with eccentrics 27, 27 fast thereon and each eccentricreceives a block 28, Figs. 1 and 6, fitted into a transverse aperture ofa hanger 24 so as to slide in a direction from side to side ofthemachine-without any in a vertical plane. Preferably liners 29 areinserted one beneath each slide block to reduce the friction.

It will thus be seen that as the shaft 25 turns, it will by itseccentrics 27, 27 impart motion to the slide blocks 28, 28, the verticalcomponent of which motion is imparted to the upper hammer 20 while thehorizontal component simply slides the blocks transversely of themachine or hangers 24. Preferably the said hangers 24 are prevented fromany possible movement sidewise of the machine by projections 30 on thehousings 1, 2, a pair of said projections extending from the inner sideof each housing horizontally over the opposite sides of each hanger butnot far enough to obstruct the lateral and horizontal movement of theslide blocks 28. v

Preferably the bearings of the shaft 25 in the housings 1, 2 aresupplemented by ad ditional bearings 31 and 32, (Fig. 1) for said shaftextending downward from the top leaf 4 at the opposite hanger 24.

The adjusting screws 23 screw at their 11 per ends into the hangers 24,(see Fig. 6 and at their lower ends they screw into nuts 33 let into thetop edge of the hammer 20 so as to be fast against turning with respectto said hammer and held in their seats by any suitable means such as theoverlap: ping keeper plates 34. It will be understood movement withrespect to the, hanger ends of each that the ad usting screws 23' arerightsuitable means are provided for turning either both screws at thesame time or one screw independently of the other, so as to adjust thedies carried by the upper and lower hammers into desired relation withrespect to parallelism. Y

Both hammers are provided at their adj acent edges with any suitablemeans'for carrying dies adapted to perform the work required, such inthe lower hammer and the slots. 37 and clamps 38 on the upper hammer.

For moving the upper and lower hammers toward and away from each otherthe gear wheels 9 and 26 upon the shafts Stand 25 are engaged by pinions39 and 40 respectively mounted upon shafts 41, 42 which have theirbearings in the housing 1 and a stanchion 43 parallel to said housingoutside he same and suitably spaced therefrom. The shaft 42 has abearing upon therear edge of the housing with a cap 44 therefor'whilethe shaft 41' extends only to the housing and has abearing cast upon theouter side thereof. The said shafts 41 and 42 have upon themselvesoutside the pinions 39 and 40 gears 46 both of which mesh with a drivingpinion 47 loose upon a driving shaft 48' which also has bearings in thehousing 1 and stanchions and extends through both of them so as toproject therebeyond. Outside the stanchion 43 said driving shaft 48carries a driving pulley 49.

It will be understood that a clutch is provided upon the driving shaft48 one member 50 of which is fast to the pinion 47 and the other member51 of which is fast to shaft 48, said clutch members being normally heldopen or separated and means are provided for closing them when desired,to start the press. The clutch may be of any Suitable or ordinaryconstruction, and any common and well-known means may be employed foroperating it. For purposes of illustration I have shown a treadle 52fulcrumed in a recess 53 of the housing 1 so as to be convenientlyaccessible to the operators foot, said treadle being connected by a link54 extending through the housing to a shaft 55 extending horizontallyalong the outside of the housing to rock the same. This shaft 55 has anarm 56, Fig. 7) adapted to swing a fork 57 for operating the clutchsleeve, and also has an arm to receive a spring 58 for holding theclutch open or in idle position. Furthermore, said shaft 55 has an arm59 which is connected as by a link 60 to a brake-operatinglever 61 whichapplies a brake 62 to stop the machine as soon as the treadle isreleased and the clutch opened by the spring 58. The brake pulley 63 Ihave shown upon the pinion shaft 42. although it might be otherwiselocated if desired.

It will be understood that the upper and lower hammers are ofsubstantially the same weight, so that they practically balance each.other and thus they open and close readily, the power that is appliedbeing used to bend the metal. For this reason very little brake pressureis ne"essary to stop them quickly when the clutch is released.

For turning the adjusting screws 23, 23 to adjust the dies with respectto their paral lelism to each other, each screw has fast upon its middleunthreaded portion a worm wheel 65 with a hub 66 beneath the same havingan annular groove 67 to receive a loose collar 68. (See Figs. 6, 8 and 9especially). These collars 68, 68 have each tworadially projecting anddiverging arms 69. 69 extending horizontally toward the other collar,and said arms provide at their upper surfaces bearings 70, 70 for ashaft 71 carrying a worm 72 adapted to mesh with the worm wheel 65, itbeing understood that said worm and its shaft extend horizontally andtransversely of the machine. The rear arms 69. 69 of the collars 68, 68have rearward extensions 74, 74 back of the bearings said 71, 71 whichare connected bya bar 75 rigidly secured to them, as by the bolts shown,and which bar holds the collars against any rotation. The front arms 69,69 of the collars 68, 68 are extended beyond the bearings 70, 70 towardeach other, as at 76, 76, and ,then bent forwardly as at 77, 77 tocarrybearings 78, 78 for a shaft 79 extending horizontally and longitudinallyof the press at the front of it. This shaft 79 also has bearings 80, 80in arms 81, 81 projecting forwardly from the collars 68, 68, and theouter ends of said arms 81 and extensions 77 may be connected by aright-hand end of the press.

T he shaft 79 has upon itself pairs of bevel gears 88, 84, the gears ofeach pair adapted to lie on opposite sides of a bevel gear 85 on the endof the worm shaft 71, and to mesh alternately therewith as the shaft 79is slid longitudinally. The said shaft 79 may be slid by any suitablemeans, but I have shown for the purpose a lever 86 pivoted upon theextension 76 of the arm 69 at the right-hand end of the machine whichlever connected to a collar 87 in an annular groove 88 of the hub of thebevel gear so that by swinging the lever the shaft can he slid asdesired. Furthermore, I have shown said lever 86 as lying across the bar82, in which holes 89 are provided to receive a spring lock or detent ofany ordinary and well-known kind upon the hand lever, although any othersuitable means might be provided for locking the shaft in its variouspositions. It will be understood that means are provided for rotatingsaid shaft 79 when desired and that according to whether the bevel gears84, 84 are engaged with the bevel gears 85, 85 or the bevel gears 83, 83are engaged with the bevel gears 85, 85, the adjusting screws 23, 23will be turned in unison in one direction or the other to move the upperhammer toward or away from the lower hammer.

If it is desired to move only one end of the upper hammer with respectto the lower hammer, angular relation or adjust them back again intoexact parallelism, the shaft 79 is slid into its intermediate positionso that neither the bevel gears 83 nor 84 engage the bevel gears 85, andthen the worm 73 at one end of the machine is turned by hand. For thispurpose, I have shown the shaft of the worm 72 at the left-hand end ofthe press extended rearwardly and supplied with a hand wheel 90, Figs.2, 3 and 5.

For driving the shaft 79 it is provided at its end next the housing 1with a pulley 91 from which a belt 92 extends to a pulley 93 upon ashort countershaft 94 at the rear of the presss and mounted in bearingsone upon the cap 44 for the driving shaft 48 upon the rear edge of thehousing 1 and the other in bar 82 as shown at the as to adjust the diesinto a given,

a bracket 95 secured to the inner side of the housing, see Figs. 2, 6and 10 more especially. Said shaft 9 1 also carries a pulley 96 fromwhich a belt 97 extends to a cone clutch pulley 98 normally loose on thedriving shaft 48. The pulley 98 is adapted to be slid into engagementwith its cone 99, (see Fig. 1) fast on the driving shaft 18 by means ofa forked lever 100 fulcrumed as at 101 and adapted to be operated by alink 102 connecting it to an arm 103 of a shaft 104 extendinghorizontally at the outer side of the housing 1 to the front of thepress where it is provided with a hand lever 105 for rocking it. Thishand lever 105 is so positioned that its weight holds it in place whenthe clutch is thrown out, although any other suitablemeans might beemployed, and when the operator desires to rotate the shaft 79 to adjustthe dies, he must positively hold the clutch thrown in with his handupon said hand lever.

-referably the belt 92 is provided with some form of belt tightener,because said belt must be slack in order to permit the up-anddo'wnmovement of the upper hammer in the operation of the press, and forpurposes of illustration I have shown in Fig. 6 especially a pulley 106resting upon the upper run of the belt and mounted in a stem 107 whichextends slidably through suitable supports 108, 108 and is provided witha stop 109 to limit its downward movement in case the belt should breakor be removed.

The adjusting shaft 7 9 is preferably provided with a hand wheel 110which can be used for hand adjustment of the screws 23, 23' if desired,as well as for moving the bevel gears enough to make them mesh properlywith the bevel gears on the worm shaft.

Obviously, as well as the gain in force "cured by bending the metal byimpact of dies carried by the two hammers against the opposite sides ofthe metal simultaneously, it will be noted that neither die has to moveas far, in order to secure a given space besethe tween them for thework, as if one of the dies were stationary and the other movable. Thismeans that eccentrics of less throw can be employed, and consequentlygreater power obtained thereby.

It will be understood that various changes andmodifications can be madein the building of my improved press, by those skilled in the art,without departing from the spirit and scope of the invention, and I donot 1ntend to restrict myself except as required by the following claimswhen construed in the light of the prior art. 1

' Having thus described the invention, what I claim is,-- Y

1. In a press, the combination of opposite housings providing verticalguideways, a shaft journaled in said housings, an eccentric fast on saidshaft, a lower hammer loosely surrounding said shaft and adapted toslide, in said guideways, said hammer being apertured transversely ofthe plane of sliding and recessed upwardly from its bottom to saidshaft, a slide block upon said eccentric in said transverse aperture andfitting the same, and a pedestal extending upward through said recess inthe hammer and providing a bearingfor the shaft adjacent said eccentric.

2. In a press, the combination of opposite housings providing verticalguideways, a shaft journaled 'in said housings, a lower hammerloosely'surrounding said shaft and adapted to slide in said guideways,said hammer being recessed upwardly from its bottom to said shaft, meansconnecting said hammer and shaft so that rotation of the shaft willimpart an up and down movement to the hammer, and a pedestal extendingupward through the recess in the hammer and providing abearing for thesaid shaft. Y

3. In a press, the combination of opposite housings, a shaft journaledin said housings, a lower hammer loosely surrounding said shaft andadapted to slide up and down between said housings, said hammer beingrecessed upwardly from its bottom to said shaft, means connecting saidhanrimer and shaft so that rotation of the shaft will impart an up anddown movement to the hammer, and a pedestal extending upward through therecess in the hammer and providing a bearing for the said shaft.

1. In a press, the combination of opposite housings providing verticalguideways, a hammer adapted to slide .in said guideways, a shaftjournaled in said housings, an eccentric fast on said shaft, a hangersurrounding .said eccentric and apertured transversely of the plane ofsliding of the hammer, a slide block upon said eccentric in saidaperture of the hanger and fitting the same, projections upon theadjacent housing extending over the sides of said hanger to hold thesame in the plane of sliding of the hammer, said projections terminatingshort of the slid block, and an adjustable connection between saidhanger and hammer.

5. In a press, the combination with a hammer, and adjusting screws withoppositely threaded ends for supporting the same, of worm wheels screws,collars in which said adjusting screws are rotatably loose andlongitudinally fast, worm shafts carried by said collars, worms on saidshafts meshing with said worm wheels, bevel gears on said worm shafts, ashaft also carried by said collars, pairs of bevel gears on said shaftone gear of each pair adapted to mesh with the worm shaft gear at oneside of the same when the pair is slid in one direction and the otherfast on said adjusting 'sitely threaded ends for gear of the pairadapted to mesh with the worm shaft gear at its other side when the pairis slid in the other direction, and means for sliding said shaft.

6. In a press, the combination with a hammer, and adjusting screws withoppositely threaded ends for supporting the same, of worm wheels fast onsaid adjusting screws, collars in which said adjusting screws arerotatably loose and longitudinally fast, worm shafts carried by saidcollars, worms on said shafts meshing with said worm wheels, bevel gearson said worm shafts, pairs of bevel gears one gear of each pair adaptedto mesh with a worm shaft gear at one side of the same when the pair isslid in one direction and the other gear of the pair adapted to meshwith the worm shaft gear at its other side when the pair is slid in theother direction, means for sliding said pairs of bevel gearssimultaneously, and means for locking said pairs of gears with eithercorresponding gears of the pairs in mesh with the worm shaft gear orwith both of them out of mesh.

7 In a press, the combination with a hammer, and adjusting screws withoppositely threaded ends for supporting the same, of worm wheels fast onsaid adjusting screws, collars in which said adjusting screws arerotatably loose and longitudinally fast, worm shafts carried by saidcollars, worms on said shafts meshing with said worm wheels, bevel gearson said worm shafts, pairs of bevel gears one gear of each pair adaptedto mesh with a worm shaft gear at one side of the same when the pair isslid in one direction and the other gear of the pair adapted to meshwith the worm shaft gear at its other side when the pair is slid in theother direction, means for sliding said pairs of bevel gearssimultaneously, and means for turning one of said worm shaftsindependent of the other.

8. In a press, the combination with a hammer, and adjusting screws withopposupporting the same, of worm wheels fast on said adjusting screws,collars in which said adjusting screws are rotatably loose andlongitudinally fast, worm shafts carried by said col lars, worms on saidshafts meshing with said worm wheels, bevel gears on said worm shafts,pairs of bevel gears one gear of each pair adapted to mesh with a wormshaft gear at one side of the same when the pair is slid in onedirection and the other gear of the pair adapted to mesh with the wormshaft gear at its other side when the pair is slid in the otherdirection, means for sliding said pairs of bevel gears simultaneously,and means upon the opposite end of one of said worm shafts from itsbevel gear for turning the same by hand.

9. In a press, housings providing guideways, a hammer slidable in saidguideways and having a socket at its edge, a shaft mounted in saidhousings, a screw connected to said shaft so as to receive reciprocatingmotion therefrom as the shaft rotates, a nut in said socket at the edgeof the hammer, said nut receiving said screw, and a plate detachablysecured to the hammer and projecting over said nut to hold it in itssocket.

10. In a sheet metal bending press, the combination with oppositehousings providing slideways, a die-holding hammer having an exposedworking edge between said housings adapted to receive a dielongitudinally of said edge and extending between said housings, meansengaging said hammer at a plurality of separated points intermediate itsends for reciprocating the same in its slideways, a second die-holdingmember opposed to said hammer with its ends slidably free in thehousings and presenting toward the hammer a working edge adapted to receive longitudinally of itself a die extending between the housings,aifd supporting means for said second die-holding member engaging thesame at a plurality of separated points intermediate its ends andopposite the said points of support of the hammer, both saiddie-holding. member and hammer being unsupported except at saidseparated points intermediate their ends.

In a sheet metal bending press, the combination with opposite housingsproviding slideways, a die-holding hammer having an exposed'working edgebetween said housings adapted to receive a die longitudinally of saidedge and extending between said housings, means engaging said hammer ata plurality of separated points intermediate its ends for reciprocatingthe same in its slideways, a second die-holder opposed to said hammerwith its ends slidably free in the housings and presenting 'toward "thehammer a working edge adapted to receive longitudinally of itself a dieextending between the housings, a member extending between the ends ofthe housings at the opposite side of said die-holder from the hammer,and means for supporting said dieholder upon said memberat a pluralityof separated points intermediate its ends and opposite the said pointsof support of the hammer, both said die-holder and hammer beingunsupported except at said separated points intermediate their ends.

12. In a press, the combination with opposite housings providingslideways, a dieholding hammer with its ends free in said slideways, ashaft substantially parallel to said hammer, and a plurality of similarmeans for transmitting motion from said shaft to reciprocate saidhammer. said motion transmitting means being spaced from each other andfrom the ends of the hammer, one between the middle of the hammer and tosaidsecond die-holding member, a plurality of means for transmittingmotion from said shaft to said second die-holding member to reciprocatethe same, said motion transmitting means being spaced from each otherand from the ends of the hammer so -as to properly distribute thestrain, one between the middle of the hammer and each of its ends, andmeans for driving said shafts in unison.

13. In a sheet metal bending press, the combination with oppositehousings provid- -,ing slideways, a die-holding hammer having an exposedworking edge between said housings adapted to receive a dielongitudinally of said edge and extending between said housings, meansengaging said hammer at a plurality of separated points intermediate itsends for reciprocating the same in its slideways, a second die-holdingmember opposed to said hammer with its ends slidably free in thehousings and presenting toward the-hammer a working edge adapted toreceive longitudinally of itself a die extending between the housings,and supporting means for said second die-holding member engaging thesame at a plurality of separated points intermediate its ends, both saiddie-holding member and hammer being unsupported except at said separatedpoints intermediate their ends.

1 L. In a sheet metal bending press, the combination with oppositehousings providing slideways, a die-holding hammer having an exposedworking edge between said housings adapted to receive a dielongitudinally of said edge and extending between said 1 housings, meansengaging said hammer at a plurality of separated points intermediate itsends for reciprocating the same in its slideways, a second die-holderopposed to said hammer with its ends slidably free in the housings andpresenting toward the hammer a working edge adapted to receivelongitudinally of itself a die extending'between the housings, a memberextending between the ends of the housings at the opposite side of saiddie-holder from the ham- Copies of this patent may be obtained for fivecents each, by addressing the mer, and means for supporting said die andextending between said housings, means engaging said hammer at aplurality of separated points intermediate the housings forreciprocating the same in its slideways, a second die-holding memberopposed to said hammer with its ends slidably free in the housings andpresenting toward the hammer a working edge adapted to receivelongitudinally of itself a die extending between the housings, and meansadapted to also engage the foundation for the press and support saidsecond die-holding member at a plurality of separated pointsintermediate the housings. 1

16. In a press, the combination with spaced housings, atop leafconnecting said housings, a hammer extending between said housings nextsaid top leaf, a die holder extending between said housings on theopposite side of said hammer from the top leaf, and means connecting thehousings at the opposite side of the hammer and die holder from the topleaf and supporting said die holder at spaced points intermediate itsends, said die holder being otherwise free to move away from the hammer.

17. In a press, the combination with spaced housings providingslideways, a hammer extending between said housings with its ends insaid slideways, a die holder opposed to said hammer and extendingbetween said housings with its ends in the slideways thereof, and meansat the side of said die holder away from the hammer for supporting thedie holder at spaced points intermediate its ends, said die holder beingotherwise free to move away from the hammer.

ROBERT NAW'RATH.

Commissioner of Patents,

Washington, D. G.

